diff --git a/plugins/views_plugin_cache.inc b/plugins/views_plugin_cache.inc
index 4d21701..2976785 100644
--- a/plugins/views_plugin_cache.inc
+++ b/plugins/views_plugin_cache.inc
@@ -265,7 +265,7 @@ class views_plugin_cache extends views_plugin {
         // If the default query back-end is used generate SQL query strings from
         // the query objects.
         if ($build_info[$index] instanceof SelectQueryInterface) {
-          $query = clone $build_info[$index];
+          $query = $build_info[$index];
           $query->preExecute();
           $build_info[$index] = (string) $query;
         }